Japan Flora: Stems 40- 70 cm. long, simple; lower leaves small, scarious, scalelike, the normal leaves 10-20 cm. long, 6-12 cm. wide, toothed and sometimes obscurely incised, shallowly 2-fid, the petiole 1-10 cm. long; inflorescence glabrescent, few- to more than 20- flowered; sterile flowers with 2 or 3 enlarged calyx-lobes; calyx-lobes of bisexual flowers elliptic, 6-8 mm. long, obtuse, green; petals obovate-orbicular, about 10 mm. long; capsules 8-10 mm. across, the style conical. July-Aug. Woods in mountains in warmer regions;

Honshu (s. Kanto Distr. and southwestw.), Shikoku, Kyushu.